Class notes Mh Boards & MhtCet

Here CHO is attached to a Sp3
N (single bonded) C atom



Classification Aliphatic → Eg: *CH3-CHO
of Aldehydes Here CHO is *directly* attached to benzene




Aromatic → Eg:
¥ CHO




Classification Aliphatic simple Symmetrical → Eg: CH3/"us

of ketones Mixed Unsymmetrical → Eg: ◦



Aromatic → Eg:
i
'c
C2H/ CH3

CH3


Acetic Acid z

Classification Aliphatic ono carboxylic → Eg: CH3-COOH

of Carboxylic Dicarboxylic → Eg: CO0H ←
COOH
Oxalic Acid




tricarboxylic → Eg: CH2-CO0M
0H - CO0H
0OH Citric Acid s
CH2-CO0H
Aromatic → Eg:



CO0H CO0H CO0H
1
CO0H
1
CH2
I
(Hz), (CH2)}
CO0H COOH
I I
CO0H
I
CO0H
Oxalic Acid) (Malonic Acid) Succinic Acid) Glutamic Acid


CO0H
I
CO0H
1
OMSGAP
CHIU (Hz), Acidity ↑
I
CO0H CO0H i.e, Oxalic Acid is most Acidic
(Adipic Acid) (Palmitic Acid) G Palmitic Acid is least Acidic.

, Note: IUPAC System, When CHO is attached
directly to an alicyclic compound, "Carbaldehyde' suffix
is used with the parent name of cyclohexane structure as
prefix. Eg: CHO (Benzene Carbaldehyde)


Note: When f (Ho) appears as a substituent, Drefix (formyl)
is used in IUPAC name. Eg: CH3-TH-CH2-COOH
CHO (3-formyl butanoic acid)


⟂ MP common names of compounds:
Acrolein → CHECH-CHO
Crotonaldehyde → CH3-CH = CH-CHO
Oxaldehyde (Glyoxal) → CHO-CHO
Mesityl Oxide → CH3-C-CH- CH3
CH3

Preparation of Aldehydes

•




Oxidizing agents Reducing agents

KC07, 42504 (controlled 0×7 [PAIN Rosenmund CH a/Pd-Basou)
PCC [AK HOD DIBAL-H E- (nor-d- ☑

CU/573K (dehydrogenation) [1" alcohol] Sn Ck, HCl S(tephen Rxn)
[C=N (imine)
cold KMNOY

Ozonolysis C03/2n)